Latch for furnace doors



Filed Dec. 21 1922 F. E. WERTHElM ET AL LATCH FOR FURNACE DOORS Dec. 14, 192s.

i ist Y Ennio @Linn WERTHEIiQ; oi oiioeed mi Asi-inn niet.

ILnINoIsyAssreivons To wen-:12min emol-mism; ci NEW YORK. N. Y;

This invention ielates to 'furnace doors; and'he's foi' zin/important 'object to provide tile-tch forj the doois the@ ivillff'secnffetiming tightly closed.v and can'be l easily y and. quickly -f Speroetedat'28-- toi'eceive-tliegthneaded.

fastened and u-nfast'ened. 1 Enithe-f' objects off; theinventionwill `be-y conie apparentes the desciiption'ie ifeeielfina connectionfwitli the accompanying dieivings inthe-vallei VJthe furnace.. litonesidethe illustrating; e. selected embodiment-of the ini. 1o Figurer. 1 -is-ationt elevation'owfiineee door .embodying the invention.; y 1

ventionenclin 'Which-ii Fig. 2. is. e sidel elevation loo' right ingligolyand 4Figs. 3 and, L are sectionalviews; taken 'Breerably 1the. latch leven-,besashendlegor .e-44A tween'fthe pivot' and the'liendle. es. indie ted.- etg, and basen.ebntmentlng' Bfadepted" CSE-@#372: 475 litt 40,'. el

on the lines 3-3 and o Fizl- -f Referring to tlie drawing-55th@ iseieieifibe.l` 'inimerah 1G indicates a f dooiey fifa/ine' here sliown esci angle shape-j in cross section',`

whereby e.. Geul-1 is provided to be fitted.

freine cern-ies lugs l2 upon which ishinged a AWardlv fionithe sides -toorni ribs 21 end 22' Y. liewiiig; grooves 2 'in each end;

grooves 2A;- ettlie' ente? edges otli the iibs seated in the Vdoei-13 here shown sis'inclnding Va body-` poi.'- tion side @enges 151 end' end ybottoni and top; l-nges lf? 'and fece 2O frame. l

:Aslieie to rest against thefece oi the doei'.

shown,v the head4 19 projects in- Jfor coopeiation withtheedgesfoftbeliningsections o'ni recesses in which tbe'V and 22 are received; and the' alie-nedV at the inner edges ot tbe-sections onie'j in' Whichpis located 'a key bei" -25 It Will be observed that grooves et the Y outer edges of the sections' andthe 'key V'25 vseated in the grooves at "thennneij edges et the sectionsl efe Well-protected 'ionithe'liet v 'If desired-fthe spaces'V be-j betvveen the `bricks vand may be vlilleill VWith gioiitj 5G.` "i1-Thel of the fnrnace. tween the bricks and' the body ofthe door AV'esindiceted in thedrziivings at Y foregoing subject. matter. is4 not cleim'e'djle'erel vin',

v.vis'ion'al application2-Seiial No;

ng ioin the' Vpoint soi c leveiy; and: ndeitedtobe engaged n 8.. "Tlejoni"flanges-hook 29 alien' tliejdooni to be l Vare pfeferebly joined tofineke' e. continuons ifni abontytlie edge 0f- Vtlie Y body poi'tion'l "Wliicli tefininates in a* heed ISjlieving-e fiat Werra-nasen.. oF-fEvAfivsToN, y

is pnovidedgtftlie'nighti sidewith 1-lateiallylprojecting lug W-hili tlneede'd on the shank lj ad] lio'olfiin substantially thev p Eig?. 3. Thenutliiney be locatel ine n e-z to prevent 'nterfeivenee wij-gh the. Wuf ther tiifnace y The body, of

grip and is.' bent at zu, sharp angle `eo locatedtliet ofdei1 for 'the levei" to take tlie position slioivnin Fig. 3 theflink. 39niust ofthe' th' the. @ect-' The bessp'rung pest the axis of the pivot'l oi the hook oi Vbotht'j peHnit'tl-iis movement oftheV petts'past Wlfiatinziy be called fcenter thev tension 'on Vthe link sition en; `rseonielyl hold Vrthec'lofoi,'tightly lclosed until. tlief-liandle oigiip '28 issvvung sofas to .ni'ovetlie pivot 40 of the linli Vto-'the v riglitrinFig 3 and swing thelinl; across the Tliee lWill be suiicientresilienoe intheA link exis of .the V'pivot orfpast centen 'By' shifting 'the ynots 30k and "3l the"'hoo l 29" niayibe moved-inwardly"or-outvvidly to ad.

theAv lining7 which will .be SecurelyA and rigid' i ly' Supported'inzpopei j position during; use

'just vtlietension end/determine thetightness with which Atbe'dofoifis held inc losed posiv 1 'tieni 'l 10o l Vit'to be easily and quickly fastened and un-k fastened.

Weclaim as our invention- Y i l. In a furnace the combination of a' doo frame having` a depression therein, a door Vhinged atone side to thefraine, alever pivoted to Ythe opposite side of the door, a

, hook on the frame mounted vin said depresT Y Y Vsion adjacent lto the pivot of the lever when the door is closed, anda link pivoted to the lever away froin'the pivot of the lever-and adapted tojengage `the hook and be moved bythe lever across the pivot of the latter.

V2. Ina furnace the combination of a ldoor frame having a depression therein, a door adapted-to close` on the frame, means in said depression for against said'fraine, a hook adjusta-bly securing said hook to said frame',y

av link adapted to. engageV the hook, anda lever pivoted'to the door, said linkbeing piv-A oted to said lever, said lever being-adapted to y Y swing Vthe linkaboutthe hook as a pivot and across the pivot of the leveiwith the door. 3.1Ina kfurnace the combination of adoor frame, a doorl ladapted to close against the frame, a lever pivoted to the door and -having anabutment to bear on the door to space said Vdoor and leverfthroughout the length of the latter, and alink pivotedto the lever and adapted to engage thehook and extend v between the dead center'of the pivot of the lever and the abutment on the side of said pivot least Y removed .from said abutment when thelatter is against the door. Y

4. In apparatus ofthe `class described', a door frame, a door hinged thereto,1a lug carried by the door, aI lever pivoted to said Vlug, a link `pivoted to the lever, and an adjustable hook carried by the frame to be engaged by said link, said hook havingrits in neiI end disposed between the inner and outer surfaces of said frame, said link being moved by the lever across the pivot thereofin locking said door. c

5. In apparatus ofthe class described, a

doorframe, a doorhinged thereto, a hook secured to said frame, a lug integral with i said door and extending. beyond the f free. edge thereof, a lever pivoted to said door is closed, a lever pivoted to said lug, a link pivoted to said lever and adapted to prising a pair of nuts'threaded on the shank of said hook and coacting'with aV portion of saidfraine. c Y

y FEDR ELiEL vvninriigana.i ASHUR URL I/VE'IHERBEE.

`carried by said frame outsideof theV door opening, a lug integral. with said door, [andY extending beyond the perimeter thereof into substantial alinement with' said hook whenV 60 engage said link in locking said door Aand means for adjusting Ysaid hook for eii'ecting a closer Contact of said door with said frameV when in locked position7 said means coni-V 

